20187167

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 28651392

約数和(自身を除く): 8464225

約数列:

[1, 7, 11, 13, 43, 49, 67, 77, 91, 143, 301, 469, 473, 539, 559, 637, 737, 871, 1001, 2107, 2881, 3283, 3311, 3913, 5159, 6097, 6149, 7007, 9581, 20167, 23177, 27391, 31691, 36113, 37453, 42679, 43043, 67067, 141169, 221837, 262171, 301301, 411983, 469469, 1552859, 1835197, 2883881, 20187167]

約数ペア:

[(1, 20187167), (7, 2883881), (11, 1835197), (13, 1552859), (43, 469469), (49, 411983), (67, 301301), (77, 262171), (91, 221837), (143, 141169), (301, 67067), (469, 43043), (473, 42679), (539, 37453), (559, 36113), (637, 31691), (737, 27391), (871, 23177), (1001, 20167), (2107, 9581), (2881, 7007), (3283, 6149), (3311, 6097), (3913, 5159)]